Teepleite (original) (raw)

A valid IMA mineral species - grandfathered

About TeepleiteHide

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Colour:

Colourless, white, light beige; colourless in transmitted light

Lustre:

Vitreous, Greasy, Dull

Crystal System:

Tetragonal

Name:

Named in honor of John Edgar Teeple (4 January 1874, Kempton, Illinois, U.S. - 28 May 1931, New York City, New York, U.S.), chemist, for his contributions to the knowledge of the mineral chemistry of Searles Lake, California. He also made significant contributions to the deciphering of Mayan glyphs.

This page provides mineralogical data about Teepleite.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:3901:3

113ebd0a-09b2-4ba4-bf39-d43a6e439b01

IMA Classification of TeepleiteHide

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Approved, 'Grandfathered' (first described prior to 1959)

Type description reference:

Classification of TeepleiteHide

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6.AC.40

6 : BORATES
A : Monoborates
C : B(O,OH)4, without and with additional anions; 1(T), 1(T)+OH, etc

25.1.4.1

25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
1 : Monoborates

10.1.1

10 : Borates with other anions
1 : Borates with halide

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Physical Properties of TeepleiteHide

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Transparency:

Transparent, Translucent

Colour:

Colourless, white, light beige; colourless in transmitted light

Fracture:

Irregular/Uneven, Sub-Conchoidal

Density:

2.076 g/cm3 (Measured) 2.07 g/cm3 (Calculated)

Optical Data of TeepleiteHide

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RI values:

_n_ω = 1.519 _n_ε = 1.503

δ = 0.016

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Chemistry of TeepleiteHide

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Mindat Formula:

Na2[B(OH)4]Cl

Crystallography of TeepleiteHide

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Crystal System:

Tetragonal

Class (H-M):

4/m m m _(_4/_m_2/_m_2/m ) - Ditetragonal Dipyramidal

Cell Parameters:

a = 7.25 Å, c = 4.84 Å

Unit Cell V:

254.40 ų (Calculated from Unit Cell)

Morphology:

Crystals tabular {001}. Crystals commonly rounded into cushion-shaped or lens-like forms and are often aggregated into interpenetrating groups. The only two forms observed in type material were {001} and {101}.

Crystal StructureHide

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ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0009750	Teepleite	Effenberger H (1982) Verfeinerung der kristallstruktur von synthetischem teepleit Acta Crystallographica B38 82-85		1982	synthetic	0	293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

XRD data for synthetic material.

Geological EnvironmentHide

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Type Occurrence of TeepleiteHide

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General Appearance of Type Material:

Buff colored crusts and pseudomorphs after halite.

Place of Conservation of Type Material:

Harvard University, Cambridge, Massachusetts, USA 95832.
National Museum of Natural History, Washington, D.C., USA, 97449.

Geological Setting of Type Material:

Residual brine in a lacustrine evaporite deposit after a period of extreme dessication.

Associated Minerals at Type Locality:

Reference:

Gale, W.A., Foshag, W.F., Vonsen, M. (1939) Teepleite, a new mineral from Borax Lake, California, American Mineralogy: 24: 48-52.

Other Language Names for TeepleiteHide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Other InformationHide

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Notes:

Readily soluble in water, yielding an alkaline solution.

Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for TeepleiteHide

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References for TeepleiteHide

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Reference List:

**Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York.**pp.372-373

Localities for TeepleiteHide

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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.